Perhaps you should try some spelling variations:
sach duoc » sach nuoc, sach dao, sach dung
cua triet » cua viet, su triet, va triet
hanh tri » thanh tri, hanh tai, hanh trinh
su sach » so sach, vu sach
ly nang » ky nang, ly hang, ly vang
bac tuc » bac tu, bach tuoc, bac thua
va hanh » van hanh, va thanh, va danh
y nang » ky nang, v nang, may nang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((y nang) OR (ly nang)) xa hoi. hieu qua ((bac tuc) or (sach duoc)) va hanh tri cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y nang) OR (ly nang)) xa hoi. hieu qua ((bac tuc) OR (sach duoc)) va hanh tri cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y nang) OR (ly nang)) xa hoi. hieu qua ((bac tuc) or (sach duoc)) va hanh tri cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ((y nang) OR (ly nang)) xa hoi. hieu qua ((bac tuc) or (sach duoc)) va hanh tri cua triet*.